The developers should take a look at MonkeyGSD (Formerly MonkeyGTD). It has the best 'quick add' feature I have ever seen in this type of app. Not only can you add multiple tasks as once, you can create multiple projects and actions at once, all with all the tags etc you could wish for.

I left MonkeyGTD because it's unmanageable if you have lots of projects, but really miss that feature.

I should elaborate a bit. Using the multi-add option within the web interface is great for adding similar tasks. For example I just moved some of mine from RTM, google tasks and excel spreadsheets. Typically I just copy/paste as all the tasks were already grouped together anyway and I didn't always have priorities on some lists.

Being able to do this via email would help for later batch entry after a meeting or at the end of the day when we've done all our GTD brain dump onto paper. (I do use an android client, but paper is better at times.)

Those tasks could be for a number of different projects, contexts, timeframes and priorities so multi-add isn't sufficient.

Another +1. I also commonly used this on RTM. The workaround mentioned above is pretty good and I've used it too. Nevertheless, especially when I'm out of the office, throwing in several tasks at once would be great.